Stop-work mechanism for locks.



0. A. BERRY. STOP WORK lYHlHNISM FOB. LGUKS.

AEPLGATON FILED .TUNE ll, 1909.

Patented Feb. L ma CHARLES A. BERRY, OF STAMFORD, CONNECTICUT, ASSIGNOR TO THE YALE (Se TOWNE MANUFACTURING COMPANY, 0F STAMFORD, CONNECTICUT.

STOP-WORK MECHANISM FOR LOCKS.

Specification of Letters Patent. i

Patented Feb. 1, 1010.

Application filed .Tune 11, 1909. Serial No. 501,648.

To all whom 'it may concern:

Be it known that I, CHARLES A. BERRY, of Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Stop-Work Mechanism for Locks, and do hereby de clare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to stop-work mechanism for locks, and it consists broadly in a single push button slide or other projecting operator, adapted when moved inwardly to connect or disconnect the stop from the hub of the outer knob.

My invention further consists in the parts and combinations of parts, and in the details of construction as will be more fully eX- plained and pointed out in the claims.

In the accompanying drawings Figure 1 is a View in elevation of the lock, the face plate being removed. Fig. 2 is a view in section on the line iv a@ of Fig. 1. Fig. 3 is a View of the push button slide, stop and outer knob hub removed and showing these parts in their proper relative position after the stop has been moved into engagement with the hub of the outer knob, and before the push button has been released. Fig. 4 shows the position of the parts after the release of the push button slide, and Fig. 5 is a view showing the relative position of the parts when the push button slide is again pushed in preparatory to disconnecting the stop from the hub.

The lock may be of any preferred construction having a bolt 1 actuated by inner and outer knobs 2 and 3 respectively. The outer knob 3 actuates a hub or roll back 4, which is provided centrally with a lug or projection 5 adapted to enter a recess 6 in the outer dead locking stop 7. Instead of making the lug on the hub and the recess in the stop, the position of these parts may be reversed, or other means of engaging the hub 4 by the stop 7 may be provided that will lock the hub against movement when the stop is in engagement therewith.

The stop 7, which is in eect a lever to which power is applied first on one side of the fulcrum and then on the other, is provided on its front face in the plane of the push button slide,

9 terminating at its base in two outwardly projecting shoulders 10 and 10, the whole surface resembling the letter W.

Mounted to slide in the lock case, is slide 11 provided with the push button 12, which latter projects through the face plate of the lock in the usual and well known manner, and carried by the slide 11 is the dog 13, the latter being pivotally mounted on the stud 14, and yieldingly held in a horizontal position by the spring 15, which latter is secured to the dog and passes loosely between the pins 16 secured to the post 8 on which the stop is fulcrumed. The slide 11 and its push button, are yieldingly held outwardly by the spring 17 bearing' against the rear face of shoulder 18, and the stop 7 is yieldingly held in its two positions by the spring 19, which, in the present instance, is a continuation of the spring 17. rIhis spring is provided with a bend 20, which engages the lower end of stop lever 7 and holds the latter in its two positions as clearly shown in Figs. 1 and 3.

The dead locking stop 7 is held by its spring 19 with the apex or point 7 of its V-shaped surface either slightly below the free end of the dog 13, as shown in Fig. 1, or slightly above said dog as shown in Fig. 4, hence when the dog is forced inwardly into contact with the stop 7, by pressing on the push button in the usual manner, the inner end of the dog engages the stop either above or below the apex of the il-shaped surface.

Assuming the parts are in the position shown in Fig. 1, if the push button 12 be pushed inwardly, the free end of the dog 13 carried thereby, engages the Vfshaped surface below the apex or point 7a, and a continued pressure against the push button causes the dog 13 to turn on its pivot and slide against the inclined surface until it abuts against the shoulder lO'apas shown in Fig. 3. rThis pressure against the shoulder 10a turns the stop on its fulerum and carries its lower end into contact with the hub of the outer knob, thus locking same against movement, the stop being held in such position by its spring 19. By now removing the finger from the push button 12, the spring 17 moves the slide 11 and its push button 12, out from the position shown in Fig. 3, to

with a V-shaped surface l that shown in Fig. 4, while the spring 15 restores the dogfrom the position shown in dotted lines Fig. 4 to that shown in full lines in the same figure. Vith the parts in the positions shown in Fig. 4, that is, with the stop dogging the outer knob hub, the free end of the dog rests in a plane above the apex or point 7a of the V-shaped surface, and if the push button be now pushed in, the free end of the dog engages the V-shaped surface above the apex, and slides upwardly thereon until it contacts with shoulder 10, and a continued pressure against said shoulder 10 moves the stop 7 on its fulcrum in a direction away from the hub of the outer knob thus releasing the latter.-

With this construction the inward movement of the push button slide, shifts the stop from its position of release, to that of locking, and the next inward movement from its locking position to that of release, the push button being restored to its outer normal position after each inward movement, by its spring.

It is evident that many slight changes might be resorted to in the relative arrangement of parts shown and described without departing from the spirit and scope of my invention hence I would have it understood that I do not wish to confine myself to the exact construction and arrangement of parts shown and described, but,

Having fully described my invention what I claim as new and desire to secure by Letters-Patent, is

1. The combination with a knob hub and a stop for dead'locking the same, of a single longitudinally movable push but-ton slide for moving said stop into and also out of Contact with the knob hub.

2. The combination with a knob hub and a pivoted stop for deadlocking same, the said stop having two oppositely disposed inclined surfaces, of a projecting operator adapted to engage said stop at one side of the apex of said double inclined surface for moving said stop into one position, and adapted to engage said stop at the opposite side of the apex of said double inclined surfaces for shifting said stop back to its original position.

3. The combination with a knob hub and a pivoted stop for deadlocking same, the said stop having two oppositely inclined sur faces, projecting above and below the axis of the stop, of an operator adapted to engage one of said inclined surfaces when the stop is in one position and engage the other inclined surface when the stop is in its other position, whereby the stop will be shifted into and out of engagement with the outer knob hub.

4. The combination with a knob hub, and a pivoted deadlocking stop therefor, of a longitudinally sliding operator having a pivoted dog adapted, at one inward movement, to engage the deadlocking stop above the fulcrum of the latter, and at the next movement, b'elow said fulcrum, whereby the stop will be moved to release and lock the knob hub.

5. The combination with a knob hub and a pivoted dead locking stop for same the latter having double inclined surfaces, of a sliding operator accessible through the face plate of the lock and having a. pivoted spring restrained dog, the latter adapted when moved inwardly to first engage said stop at one side of the apex of said double inclined surface and at the next inward movement to engage said stop on the opposite side of said apex.

6. The combination with a knob hub and a pivoted dead locking stop for same, the latter having a double inclined surface, of a projecting operator, a spring restrained dog pivoted to said operator and adapted to engage said inclined surfaces and a spring for holding the stop in its two positions.

7. The combination with a knob hub, a pivoted dead locking stop for same and means for yieldingly holding said stop in its two positions, of a longitudinally slidable operator adapted when pushed in to engage and move said stop in one direction and on the next inward movement, to engage and moved said stop in the opposite direction.

8. The combination with a knob hub, a pivoted deadlocking stop having a double inclined surface, and a spring for retaining said stop in its two positions, of a single push button and a pivoted dog carried by the push button and adapted to engage alternately, the two inclines on the stop.

9. The combination with a knob hub, a pivoted deadlocking stop having a double i11- clined surface, and a spring for holding said stop in its two positions, of a push button, a spring for normally holding same in its projected position and means carried by said push button and adapted to enga-ge alternately the two inclines on the stop.

10. The combination with a knob hub, of a dead locking stop therefor, and a single operator adapted when moved inwardly to move said stop into engagement with the hub and on the next inward movement to move the stop out of engagement with the hub.

l1. The combination with a knob hub, of a dead locking stop therefor, a spring for holding the latter in its two positions, a push button and its slide, a spring for normally holding the latter away from the stop, and a pivoted dog carried by the slide and adapted when moved inwardly to engage the stop and move same into engagement with the knob hub, and on its next inward movement, to engage and move the stop out of engagement with the hub.

12. rIhe combination with a knob hub, a

pvoted stop for deadlookng same and a In testimony whereof, I have signed this sp1-111g for holdlng` the stop 111 lts two pos1- specloatloll 111 the presence of `5WD subtlons, of a push button, a sprmg for no1'- scrlblng Wltn'esses.

mally holding same projected, a pvoted clog CHARLES A. BERRY. 011 the push button and a spring for nor- Witnesses: molly holding the dog n the plane of the WARREN H. TAYLOR,

axis of the stop. ELLIS H. JONES. 

